Maximum air speed indicator
Abstract
Abstract SPEEDOMETER COMPRISES CASE HAVING ARCUATE AIR PASSAGEWAY AND INNER CHAMBER WITH SLOT BETWEEN PASSAGEWAY AND CHAMBER, AIR OPENINGS ON CASE COMMUNICATE WITH PASSAGEWAY. PADDLE ASSEMBLY IN CASE INCLUDES PADDLE BLADE IN PASSAGEWAY, ARM CONNECTED TO PADDLE BLADE EXTENDING THEREFROM THROUGH SLOT TO PIVOTAL CONNECTION IN CHAMBER, AND INDICATOR NEEDLE CONNECTED FOR MOVEMENT WITH ARM PADDLE BLADE. BIASING DEVICE URGES PADDLE ASSEMBLY IN DIRECTION OPPOSITE TO DIRECTION OF AIR FLOW THROUGH PASSAGEWAY RATCHET MECHANISM INCLUDES TEETH CONNECTED FOR MOVEMENT WITH PADDLE ASSEMBLY AND PAWL IN RELEASABLE ENGAGEMENT WITH TEETH ARRANGED TO HOLD PADDLE ASSEMBLY AT POINT OF MAXIMUM SWING WHEN AIR FLOWING THROUGH PASSAGEWAY SWINGS PADDLE BLADE AGAINST FORCE OF BIASING DEVICE.
Inventors
- 👤 John E Cronin
- 👤 Warren H Anderson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |